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Derris Lour. and Brachypterum (Wight & Arn.) Benth. (Leguminosae subfamily Papilionoideae) in Australia are revised on the basis of examination of fresh, dried and spirit-preserved specimens and phylogenetic analysis of plastid matK and nuclear internal transcribed spacer (ITS) sequence data. Three species of Derris and four species of Brachypterum are recognised as occurring in Australia. Two new Brachypterum species, namely Brachypterum nitidum W.E.Cooper and Brachypterum opacum W.E.Cooper, are described and illustrated. Notes on habitat, distribution and an identification key are presented for all species of both genera that occur in Australia. [ABSTRACT FROM AUTHOR]

The article reports on the use of retenone, as a piscicide, in Australia, following a discussion on plans and application issues that may be faced in considering the use. An overview of the use of noxious poeciliid fish (Phalloceros caudimaculatus) in a case study is offered. Dense aquatic vegetation prohibited adequate mixing of rotenone and allowed the survival of target fish in low rotenone concentration areas. Moreover, it was suggested to review the legislative arrangement for rotenone use.